The state of Illinois currently owes Centerstone, which also provides behavioral health services in Florida, Indiana, Kentucky and Tennessee, over $6 million.

"With no end to this state contract crisis in sight, the viability of our entire organization is being threatened," Centerstone CEO John Markley said in a statement. "So, after careful review of the situation, we are enacting difficult measures to protect Centerstone, our 600 employees across the state and the 16,000 people of all ages who depend on us."

When the current fiscal year ends June 30, Markley said Centerstone "will eliminate several state contracts because of the risk involved," resulting in the closure of numerous programs. The closures will affect 700 clients and 39 staffers, according to Markley.

"The loss of our colleagues and services is painful, but our state has offered us little choice," Markley said. "It is our sincere hope that our Governor and legislature finally do the right thing and act in the best interests of all of their constituents by ending this state budget crisis."

The Illinois budget impasse has also forced the DeWitt County Human Resource Center (HRC), a mental health agency with about 500 clients, to discontinue its outpatient mental health services as of July 1.

HRC's executive director said the agency is "out of money" and has yet to receive $150,000 in service payments from the state.

The agency is hoping other providers can fill the service gap once HRC's programs close next month.